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Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors

Parasitic infections are common in sheep farming worldwide. A cross-sectional study was carried out to determine the prevalence and associated risk factors among gastrointestinal parasites and sheep herds from the Brazilian Pampa biome, Rio Grande do Sul state, Brazil. Twenty-one farms were visited,...

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Autores principales: Martins, Natália Soares, dos Santos, Carolina Caetano, da Motta, Sara Patron, Moreira, Andrios da Silva, Farias, Nara Amélia da Rosa, Ruas, Jerônimo Lopes
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Sociedade de Medicina Veterinária do Estado do Rio de Janeiro 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9315437/
https://www.ncbi.nlm.nih.gov/pubmed/35900352
http://dx.doi.org/10.29374/2527-2179.bjvm001522
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author Martins, Natália Soares
dos Santos, Carolina Caetano
da Motta, Sara Patron
Moreira, Andrios da Silva
Farias, Nara Amélia da Rosa
Ruas, Jerônimo Lopes
author_facet Martins, Natália Soares
dos Santos, Carolina Caetano
da Motta, Sara Patron
Moreira, Andrios da Silva
Farias, Nara Amélia da Rosa
Ruas, Jerônimo Lopes
author_sort Martins, Natália Soares
collection PubMed
description Parasitic infections are common in sheep farming worldwide. A cross-sectional study was carried out to determine the prevalence and associated risk factors among gastrointestinal parasites and sheep herds from the Brazilian Pampa biome, Rio Grande do Sul state, Brazil. Twenty-one farms were visited, where rectal faecal samples were individually collected from 309 animals. The sheep industry on the studied farms was characterised by small farms with a low level of technification, an extensive grazing system and meat production. Of all samples analysed, strongyle nematodes had the highest prevalence (77.02%), followed by Eimeria spp. (70.55%), Moniezia expansa (20.39%) and Strongyloides papillosus (17.48%). Mixed infection, between helminths and protozoans, was detected in 68.61% of samples. All herds were positive for strongyle and Eimeria spp. A predominance of Haemonchus spp. and Trichostrongylus spp. nematodes was observed in the herds. Younger animals were significantly more affected by Eimeria and M. expansa. In the semi-intensive and intensive systems, a higher frequency of Eimeria and strongyle infections was observed. Parasite infection was significantly reduced at low animal densities. The Brazilian Pampa region presents a high prevalence of gastrointestinal parasites among sheep; age, breeding system and stocking density were factors associated with parasite infection.
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spelling pubmed-93154372022-07-26 Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors Martins, Natália Soares dos Santos, Carolina Caetano da Motta, Sara Patron Moreira, Andrios da Silva Farias, Nara Amélia da Rosa Ruas, Jerônimo Lopes Braz J Vet Med Scientific Article Parasitic infections are common in sheep farming worldwide. A cross-sectional study was carried out to determine the prevalence and associated risk factors among gastrointestinal parasites and sheep herds from the Brazilian Pampa biome, Rio Grande do Sul state, Brazil. Twenty-one farms were visited, where rectal faecal samples were individually collected from 309 animals. The sheep industry on the studied farms was characterised by small farms with a low level of technification, an extensive grazing system and meat production. Of all samples analysed, strongyle nematodes had the highest prevalence (77.02%), followed by Eimeria spp. (70.55%), Moniezia expansa (20.39%) and Strongyloides papillosus (17.48%). Mixed infection, between helminths and protozoans, was detected in 68.61% of samples. All herds were positive for strongyle and Eimeria spp. A predominance of Haemonchus spp. and Trichostrongylus spp. nematodes was observed in the herds. Younger animals were significantly more affected by Eimeria and M. expansa. In the semi-intensive and intensive systems, a higher frequency of Eimeria and strongyle infections was observed. Parasite infection was significantly reduced at low animal densities. The Brazilian Pampa region presents a high prevalence of gastrointestinal parasites among sheep; age, breeding system and stocking density were factors associated with parasite infection. Sociedade de Medicina Veterinária do Estado do Rio de Janeiro 2022-07-12 /pmc/articles/PMC9315437/ /pubmed/35900352 http://dx.doi.org/10.29374/2527-2179.bjvm001522 Text en Copyright Martins et al https://creativecommons.org/licenses/by-nc/4.0/Copyright Martins et al. This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License which permits unrestricted non-commercial use, distribution, and reproduction in any medium provided the original work is properly cited.
spellingShingle Scientific Article
Martins, Natália Soares
dos Santos, Carolina Caetano
da Motta, Sara Patron
Moreira, Andrios da Silva
Farias, Nara Amélia da Rosa
Ruas, Jerônimo Lopes
Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title_full Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title_fullStr Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title_full_unstemmed Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title_short Gastrointestinal Parasites in Sheep from the Brazilian Pampa Biome: Prevalence and Associated Factors
title_sort gastrointestinal parasites in sheep from the brazilian pampa biome: prevalence and associated factors
topic Scientific Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9315437/
https://www.ncbi.nlm.nih.gov/pubmed/35900352
http://dx.doi.org/10.29374/2527-2179.bjvm001522
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